public class Chouxiang {

}
abstract class Shape {
    protected String name;

    public Shape(String xm) {
        name = xm;
        System.out.print("名称：" + name);
    }

    abstract public double getArea();

    abstract public double getLength();
}
class Circle extends Shape{
    private final double pi=3.14;
    private double radius;
    public Circle(String shapeName,double r){
        super(shapeName);
        radius=r;
}

    @Override
    public double getArea() {
        return 0;
    }

    @Override
    public double getLength() {
        return 0;
    }
}
